Erica is swimming due north at a rate of 7 feet per second if the current of the lake is 3 feet per second in the direction of S 75 W find Erica's resultant speed and direction( as a true bearing)

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?